#ifndef included_vnet_dhcp6_packet_h
#define included_vnet_dhcp6_packet_h
/*
* DHCP packet format
*
* Copyright (c) 2013 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <vnet/ip/ip6_packet.h>
// #define DHCP_VRF_NAME_MAX_LEN L3VM_MAX_NAME_STR_LEN
// #define DHCPV6_MAX_VRF_NAME_LEN L3VM_MAX_NAME_STR_LEN
#define DHCP_MAX_RELAY_ADDR 16
#define PROTO_UDP 17
#define DHCPV6_CLIENT_PORT 546
#define DHCPV6_SERVER_PORT 547
#define HOP_COUNT_LIMIT 32
#define DHCPV6_CISCO_ENT_NUM 9
/*
* DHCPv6 message types
*/
typedef enum dhcpv6_msg_type_
{
DHCPV6_MSG_SOLICIT = 1,
DHCPV6_MSG_ADVERTISE = 2,
DHCPV6_MSG_REQUEST = 3,
DHCPV6_MSG_CONFIRM = 4,
DHCPV6_MSG_RENEW = 5,
DHCPV6_MSG_REBIND = 6,
DHCPV6_MSG_REPLY = 7,
DHCPV6_MSG_RELEASE = 8,
DHCPV6_MSG_DECLINE = 9,
DHCPV6_MSG_RECONFIGURE = 10,
DHCPV6_MSG_INFORMATION_REQUEST = 11,
DHCPV6_MSG_RELAY_FORW = 12,
DHCPV6_MSG_RELAY_REPL = 13,
} dhcpv6_msg_type_t;
/* Name, code, min payload length */
#define dhcpv6_foreach_option \
_(CLIENTID , 1 , 4 ) \
_(SERVERID , 2 , 4 ) \
_(IA_NA , 3 , 12) \
_(IA_TA , 4 , 4 ) \
_(IAADDR , 5 , 24) \
_(ORO , 6 , 0 ) \
_(PREFERENCE , 7 , 1 ) \
_(ELAPSED_TIME , 8 , 2 ) \
_(RELAY_MSG , 9 , 0 ) \
_(AUTH , 11 , 11) \
_(UNICAST , 12 , 16) \
_(STATUS_CODE , 13 , 2 ) \
_(RAPID_COMMIT , 14 , 0 ) \
_(USER_CLASS , 15 , 0 ) \
_(VENDOR_CLASS , 16 , 4 ) \
_(VENDOR_OPTS , 17 , 4 ) \
_(INTERFACE_ID , 18 , 0 ) \
_(RECONF_MSG , 19 , 1 ) \
_(RECONF_ACCEPT , 20 , 0 ) \
_(DNS_SEARCH , 24 , 0 ) \
_(IA_PD , 25 , 12) \
_(IAPREFIX , 26 , 25) \
_(REMOTEID , 37 , 4 ) \
_(VSS , 68 , 1 ) \
_(CLIENT_LINK_LAYER_ADDRESS, 79 , 2 )
/*
* DHCPv6 options types
*/
enum
{
#define _(a,b,c) DHCPV6_OPTION_##a = b,
dhcpv6_foreach_option
#undef _
DHCPV6_OPTION_MAX
};
/*
* DHCPv6 status codes
*/
enum
{
DHCPV6_STATUS_SUCCESS = 0,
DHCPV6_STATUS_UNSPEC_FAIL = 1,
DHCPV6_STATUS_NOADDRS_AVAIL = 2,
DHCPV6_STATUS_NO_BINDING = 3,
DHCPV6_STATUS_NOT_ONLINK = 4,
DHCPV6_STATUS_USE_MULTICAST = 5,
DHCPV6_STATUS_NOPREFIX_AVAIL = 6,
};
/*
* DHCPv6 DUID types
*/
enum
{
DHCPV6_DUID_LLT = 1, /* DUID Based on Link-layer Address Plus Time */
DHCPV6_DUID_EN = 2, /* DUID Based on Enterprise Number */
DHCPV6_DUID_LL = 3, /* DUID Based on Link-layer Address */
};
//Structure for DHCPv6 payload from client
typedef struct dhcpv6_hdr_
{
u8 msg_type; //DHCP msg type
u8 xid[3]; //Transaction id
u8 data[0];
} dhcpv6_header_t;
/* *INDENT-OFF* */
typedef CLIB_PACKED (struct dhcpv6_relay_ctx_ {
dhcpv6_header_t *pkt;
u32 pkt_len;
u32 dhcpv6_len; //DHCPv6 payload load
// if_ordinal iod;
u32 if_index;
u32 ctx_id;
char ctx_name[32+1];
u8 dhcp_msg_type;
}) dhcpv6_relay_ctx_t;
/* *INDENT-ON* */
//Structure for DHCPv6 RELAY-FORWARD and DHCPv6 RELAY-REPLY pkts
/* *INDENT-OFF* */
typedef CLIB_PACKED (struct dhcpv6_relay_hdr_ {
u8 msg_type;
u8 hop_count;
ip6_address_t link_addr;
ip6_address_t peer_addr;
u8 data[0];
}) dhcpv6_relay_hdr_t;
/* *INDENT-ON* */
typedef enum dhcp_stats_action_type_
{
DHCP_STATS_ACTION_FORWARDED = 1,
DHCP_STATS_ACTION_RECEIVED,
DHCP_STATS_ACTION_DROPPED
} dhcp_stats_action_type_t;
//Generic counters for a packet
typedef struct dhcp_stats_counters_
{
u64 rx_pkts; //counter for received pkts
u64 tx_pkts; //counter for forwarded pkts
u64 drops; //counter for dropped pkts
} dhcp_stats_counters_t;
typedef enum dhcpv6_stats_drop_reason_
{
DHCPV6_RELAY_PKT_DROP_RELAYDISABLE = 1,
DHCPV6_RELAY_PKT_DROP_MAX_HOPS,
DHCPV6_RELAY_PKT_DROP_VALIDATION_FAIL,
DHCPV6_RELAY_PKT_DROP_UNKNOWN_OP_INTF,
DHCPV6_RELAY_PKT_DROP_BAD_CONTEXT,
DHCPV6_RELAY_PKT_DROP_OPT_INSERT_FAIL,
DHCPV6_RELAY_PKT_DROP_REPLY_FROM_CLIENT,
} dhcpv6_stats_drop_reason_t;
#define dhcpv6_optlen(opt) clib_net_to_host_u16((opt)->length)
/* *INDENT-OFF* */
typedef CLIB_PACKED (struct {
u16 option;
u16 length;
u8 data[0];
}) dhcpv6_option_t;
/* *INDENT-ON* */
/* *INDENT-OFF* */
typedef CLIB_PACKED (struct {
dhcpv6_option_t opt;
u16 status_code;
}) dhcpv6_status_code_t;
/* *INDENT-ON* */
/* *INDENT-OFF* */
typedef CLIB_PACKED (struct {
dhcpv6_option_t opt;
u32 int_idx;
}) dhcpv6_int_id_t;
/* *INDENT-ON* */
/* *INDENT-OFF* */
typedef CLIB_PACKED (struct {
dhcpv6_option_t opt;
u8 vss_type;
u8 data[0];
}) dhcpv6_vss_t;
/* *INDENT-ON* */
/* *INDENT-OFF* */
typedef CLIB_PACKED (struct {
dhcpv6_option_t opt;
u32 ent_num;
u32 rmt_id;
}) dhcpv6_rmt_id_t;
/* *INDENT-ON* */
/* *INDENT-OFF* */
typedef CLIB_PACKED (struct {
dhcpv6_option_t opt;
u16 link_type;
u8 data[6]; // data[0]:data[5]: MAC address
}) dhcpv6_client_mac_t;
/* *INDENT-ON* */
typedef CLIB_PACKED (struct
{
dhcpv6_option_t opt; u32 iaid; u32 t1;
u32 t2;
u8 data[0];
}) dhcpv6_ia_header_t;
typedef CLIB_PACKED (struct
{
dhcpv6_option_t opt; u32 preferred; u32 valid; u8 prefix;
ip6_address_t addr;
}) dhcpv6_ia_opt_pd_t;
typedef CLIB_PACKED (struct
{
dhcpv6_option_t opt; ip6_address_t addr; u32 preferred;
u32 valid;
}) dhcpv6_ia_opt_addr_t;
typedef CLIB_PACKED (struct
{
dhcpv6_option_t opt;
u16 options[0];
}) dhcpv6_oro_t;
typedef CLIB_PACKED (struct
{
dhcpv6_option_t opt; u16 elapsed_10ms;
}) dhcpv6_elapsed_t;
typedef CLIB_PACKED (struct
{
dhcpv6_option_t opt; u16 duid_type;
u16 hardware_type;
}) dhcpv6_duid_t;
typedef CLIB_PACKED (struct
{
dhcpv6_option_t opt; u16 status_code;
u8 message[0];
}) dhcpv6_status_t;
#endif /* included_vnet_dhcp6_packet_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
